I have 4 chickens and only have space for 4. So I don't need or want a male. They are 3 weeks old So far 3 of the 4 are definitely girls. The one in question is a Easter Egger and has been very vocal from day 1 and is the Dominant one in the bunch. She is also bigger. Her tail feathers almost always stay in the upward position and she protects the other ones and gets very protective of the other chicks. I don't want to give her away until I'm 100% sure it's a rooster.